Flash Calculator for Drake Equation

I want to re-create the interactive presentation using my own words and pictures, but exacly the same functionality and calculations as

[url removed, login to view]

I have another project open for a straight javascript version of the calculator, and I will be selecting winners for both projects. A simple JS version and this more complex flash version will appear on my website.

The customizable text should be read from text files that can be manually updated and maintained, and the flash file should no be password protected so that I or a flash/java developer can further customize it in the future if the equation should change (or I choose to change it).